What is a meaning 9KA in MCB?

In the context of MCB (Miniature Circuit Breakers), "9KA" refers to the breaking capacity of the circuit breaker, indicating its ability to interrupt fault currents. Specifically, "9KA" means that the MCB can safely interrupt a fault current of up to 9,000 amperes without sustaining damage. This rating is crucial for ensuring the protection of electrical circuits and equipment from overloads and short circuits.